JP2011230347A - Method of manufacturing holding fixture, and molding mold of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a holding fixture, which manufactures a holding fixture maintaining a flatness of an reinforcing member by releasing the reinforcing member from a molding mold without deforming it, and also to provide a molding mold easily releasing the reinforcing member without deforming it.SOLUTION: The method includes: manufacturing a holding fixture 1 provided with a reinforcing member 5 having supporting holes 11, and an elastic member 6 having holding holes 15, with a molding mold 30 having molding pins 35 erected therein; and pulling out the molding pins 35 while a contact between an integrated molding object in a pulling-out direction of the molding pins 35, and the molding mold 30 is maintained. The molding mold 30 is used for molding the holding fixture 1, and is equipped with: a first and second molds 31 and 32 facing each other; and a third mold 33 arranged between them and forming an arrangement space 34. In the molding mold 30, the first mold 31 is arranged on the same side as the third mold 33 to the arrangement space 34, and has the molding pins 35, while the third mold 33 has through-holes 33a.

Description

  The present invention relates to a method for manufacturing a holding jig and a molding die, and more particularly, to manufacture a holding jig in which the reinforcing member is released from the molding die without deforming the reinforcing member and the flatness of the reinforcing member is maintained. The present invention relates to a manufacturing method of a holding jig that can be used, and a molding die that can be easily released without deforming a reinforcing member.

  Integrated circuits and the like used in electronic devices such as computers, telephones, game machines, and automobile electrical devices are equipped with small components such as a multilayer ceramic chip capacitor (sometimes simply referred to as a chip capacitor). . When manufacturing such a small component, a holding jig in which a holding hole for holding a small component member or the like capable of manufacturing a small component is usually used. As such a holding jig, for example, Patent Document 1 discloses that “(a) a plate body having a large number of parallel through passages is provided. (B) The passage has an elastic wall and has a small electrical part. Can be positioned in the passage, and the dimension of the passage is smaller than the dimension of the corresponding part, and the part is elastically gripped at the position in the passage. A large number of electrical device for coating the ends of small electrical parts ”.

  These holding jigs and the like are manufactured using, for example, a molding die in which molding pins for forming the holding holes are erected. Specifically, Patent Document 2 states that “a method of manufacturing a chip component holding plate for elastically holding a plurality of chip components, in which an elastic material poured into a hard substrate is cured. Then, a method of manufacturing a chip component holding plate, comprising the step of removing the pins. ”(Claim 1). In this manufacturing method, “the pin 27 is erected on the upper mold 25, and the elastic material 15 is in close contact with the pin and is difficult to release. 25, and the pin 27 is pulled out from the elastic member 15. "(Refer to the second page, upper right column, line 11 to the lower left column, line 11 and FIG. 4). When the holding plate, in which the hard substrate 11 and the elastic material 15 are integrally formed in this way, is released from the molding die, the pulling force of the pin 27 due to the adhesion force, frictional force, etc. between the elastic material 15 and the pin 27. As a result, the hard substrate 11, particularly in the vicinity of the central portion thereof, is deformed, and the deformation may not be restored after being released from the mold.

  As a mold for preventing the deformation of the hard substrate 11 and manufacturing a flat holding plate, Patent Document 3 states that “the core material has rigidity such as metal and the chip component is elastic in the thickness direction in advance. An external electrode formed by inserting a plate with holes slightly larger than the diameter of the holes that can be held, and molding silicone rubber so as to have a number of holes that can elastically hold electronic components in the thickness direction. A mold structure of an electronic component holding plate for coating, wherein a large number of pins provided in the mold for hole formation are embedded in a fixed mold and a movable mold. A holding plate molding die used for external electrode application "is described. When a holding plate is manufactured using this holding plate molding die, the effect of preventing deformation of the core material can be expected when the molded holding plate is released from the holding plate molding die.

  By the way, in recent years, electronic parts have been further reduced in size, so that the deformation of the hard substrate at the time of releasing from the molding die can be further prevented and the mold can be easily released from the molding die. It is desired.

Japanese Examined Patent Publication No. 62-20585 Japanese Patent Laid-Open No. 2-14508 JP 2004-114624 A

  It is an object of the present invention to provide a manufacturing method of a holding jig that can manufacture a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member. To do.

  An object of the present invention is to provide a molding die that can be easily released without deforming a reinforcing member.

As means for solving the problems,
According to a first aspect of the present invention, the reinforcing member includes a reinforcing member having a support hole and an elastic member having a holding hole for holding a small component, and the reinforcing member passes through the inside of the support hole. A manufacturing method in which a holding jig embedded in a member is integrally formed with a molding die in which a plurality of molding pins for forming the holding hole are erected, and the integration in the direction of removing the molding pin A method of manufacturing a holding jig, wherein the molding pin is removed in a state where contact between the molded body and the molding die is maintained,
A second aspect of the present invention is the method of manufacturing a holding jig according to claim 1, wherein the forming pin is pulled out in one step in the pulling direction.
According to a third aspect of the present invention, the reinforcing member includes a reinforcing member formed with a support hole and an elastic member formed with a holding hole for holding a small component, and the reinforcing member passes through the inside of the support hole. A molding die for molding a holding jig embedded in a member, wherein the molding die includes a first die and a second die that are arranged to face each other, and the first die and the second die. A third mold that is interposed between molds and forms a placement space in which the reinforcing member is disposed between at least one of the first mold and the second mold. Of the mold and the second mold, the mold disposed on the same side as the third mold with respect to the arrangement space is formed so as to penetrate the third mold and stand vertically in the arrangement space. The third mold has a through-hole drilled in the same arrangement as the molding pin of the mold. It is molding die, characterized in that said,
According to a fourth aspect of the present invention, in the molding die according to the third aspect, the molding pins are erected on the first die in an arrangement similar to the arrangement of the support holes.

  In the holding jig manufacturing method according to the present invention, the molding pin is removed while maintaining the contact between the molded body in the direction of removing the molding pin and the molding die. Body deformation can be prevented by contact with the mold. Further, the molding die according to the present invention includes a third die having a through hole drilled in the same arrangement as the molding pins of the first die or the second die arranged on the opposite side to the arrangement space. Thus, the molding pins of the first mold and / or the second mold can be removed with the third mold in contact with the integrally molded body. As a result, the holding jig manufacturing method according to the present invention and the molding die according to the present invention can easily release the integrally molded body without deforming or damaging the reinforcing member. Therefore, according to the present invention, there is provided a method for manufacturing a holding jig capable of manufacturing a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member. Further, it is possible to provide a molding die that can be easily released without deforming the reinforcing member.

FIG. 1 is a schematic top view showing an example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 2 is a schematic cross-sectional view showing a part of a cross section of the holding jig cut along line AA in FIG. FIG. 3 is a schematic top view showing a reinforcing member in an example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 4 is a schematic top view showing another example of a holding jig manufactured by the method for manufacturing a holding jig according to the present invention. FIG. 5 is a schematic explanatory view for explaining an example of a method for manufacturing a holding jig according to the present invention. FIG. 5 (a) shows an example of a method for manufacturing a holding jig according to the present invention. It is explanatory drawing explaining the state which has arrange | positioned the reinforcement member to the shaping die which is an example of a metal mold | die, FIG.5 (b) is an example of the manufacturing method of the holding jig which concerns on this invention. FIG. 5C is an explanatory diagram for explaining a state in which a first mold is opened in a molding die that is an example of a mold, and FIG. 5C is an example of a method for manufacturing a holding jig according to the present invention, and molding according to the present invention. It is explanatory drawing explaining the state which opened the 3rd metal mold | die in the metal mold | die which is an example of a metal mold | die. FIG. 6 is a schematic top view showing an example of a third mold in the molding die that is an example of the molding die according to the present invention. FIG. 7 is an explanatory view for explaining a state in which a reinforcing member is arranged in a molding die which is another example of the molding die according to the present invention.

  The holding jig manufactured by the manufacturing method according to the present invention (hereinafter sometimes referred to as the holding jig according to the present invention) includes a reinforcing member in which a support hole is formed and a holding hole for holding a small part. The reinforcing member is embedded in the elastic member so that the holding hole passes through the inside of the support hole. The holding jig according to the present invention can elastically hold the small component inserted into the holding hole by the elastic force of the elastic member.

  The small component held by the holding jig according to the present invention is a small component member that can be manufactured in a small component manufacturing process, a transport process, etc. , Members for small machine elements, members for small electronic components, and the like. In addition, since the manufacture of small parts includes a process of transporting small parts, the small parts include small parts themselves, for example, small appliances, small mechanical elements, and small electronic parts. Therefore, in the present invention, it is not necessary to clearly distinguish the small component from the small component member. As a small electronic component and a member for a small electronic component, for example, a finished product or an unfinished product such as a chip capacitor, an inductor chip, a resistor chip, etc., and / or, for example, a prism or cylinder, Examples thereof include a prismatic body or cylindrical body having ridges at one end, and a prismatic body or cylindrical body having heels at both ends. Such a small component has, for example, a diameter in a plane perpendicular to the axis with an axis length of 1.0 to 3.2 mm or a diameter of a virtual circumscribed circle circumscribing a cross-sectional shape perpendicular to the axis. It has a dimension of 3 mm. Since the holding jig according to the present invention can hold small parts independently as will be described later, in this invention, the small size is further reduced from the above-mentioned dimensions in which the dimensional error of the small parts greatly affects the uniformity of the holding state. Parts can also be used.

  The holding jig according to the present invention is suitable for holding the small component, for example, more preferably for holding a small component that needs to be coated with a conductive paste for electrode formation in at least two places.

  A holding jig 1 as an embodiment of the holding jig according to the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the holding jig 1 includes a flat portion 12 (not shown in FIG. 1) having a support hole 11 and a flange portion 13 formed around the flat portion 12. A reinforcing member 5 and an elastic member 6 having a holding hole 15, and the flat portion 12 is embedded in the elastic member 6 so that each of the holding holes 15 passes through each of the support holes 11. .

  As shown well in FIG. 2, the reinforcing member 5 includes the elastic member 6 so that the flat portion 12 in which the support hole 11 is formed is embedded in at least the elastic member 6 described later, and the elastic member 6 becomes flat. Support reinforcement. 2 and 3, the reinforcing member 5 includes a rectangular flat portion 12 having a large number of support holes 11, and a thickness direction of the flat portion 12 around the flat portion 12, that is, an upper surface direction. And a flange 13 protruding in the lower surface direction.

  The flange portion 13 is formed so as to surround the flat portion 12, and as shown in FIG. 2, the protrusion amount in the upper surface direction and the lower surface direction of the flat portion 12 is adjusted to be constant. In other words, as shown clearly in FIG. 3, the flange portion 13 forms a rectangular frame surrounding the flat portion 12, and the flat portion 12 is thinner than the flange portion 13 at a substantially central portion in the thickness direction. It is connected. The flange portion 13 can also be referred to as a flange portion, reinforces the strength of the flat portion 12, and ensures excellent handleability when the holding jig 1 is used. The thickness of the flange 13 is set within a range of 8.9 to 10.0 mm, for example.

  As shown in FIGS. 2 and 3, the flat portion 12 is a region in which a large number of support holes 11 penetrating in the thickness direction are formed over the entire region. Usually, the flat portion 12 has a constant thickness and is flat. It has become. The thickness of the flat portion 12 is preferably in the range of 5.9 to 7 mm, for example.

  The support holes 11 formed in the flat portion 12 include a large number of the support holes 11 in the flat portion 12, for example, 5000 or more, preferably at least 6000, more preferably at least 7000, particularly preferably at least. There are 7500 (in FIG. 3, a part of the support hole 11 is not shown). When a large number of support holes 11 are formed in the reinforcing member 5, productivity in a method for manufacturing a small component using the holding jig 1 is improved. As shown in FIG. 3, the support holes 11 are arranged in a so-called “staggered” manner. Specifically, in this example, the support holes 11 include the first support holes 11A arranged in odd rows along the first arrangement direction which is the short side direction of the reinforcing member 5 illustrated in FIG. The second support holes 11B are arranged in rows. More specifically, the support holes 11 are arranged along the first arrangement direction and the second arrangement direction intersecting the first arrangement direction, in this example, the long side direction of the reinforcing member 5 shown in FIG. The first support holes 11A, the two first support holes 11A adjacent along the first arrangement direction, and the two first support holes adjacent to the two support holes on the same side in the second arrangement direction The region surrounded by the hole 11A is preferably composed of a second support hole 11B arranged at the center thereof. The first support holes 11A are arranged in the outermost row in the first arrangement direction, and the second support holes 11B are arranged in the outermost row in the second arrangement direction. In such a so-called “staggered” arrangement, the first holding holes 15 </ b> A located diagonally and the second support holes 11 </ b> B arranged between them have their axes on the same straight line. The angle between the first arrangement direction and the second arrangement direction is about 45 °. When the support holes 11 are arranged in a so-called “staggered” manner as described above, the so-called “staggered” arrangement as described above may be, for example, a grid-like arrangement shown in FIG. Since the support holes 11 can be formed in a larger number, that is, at a high density, the productivity of the holding jig 1 can be greatly improved. Accordingly, in order to hold a larger number of small parts, the support holes 11 are preferably arranged in a so-called “staggered” manner. The support holes 11 are arranged at a constant interval in both the first arrangement direction and the second arrangement direction, for example, such that the axial distance between the support holes 11 is in the range of 1.8 to 5.5 mm. The cross-sectional shape of the support hole 11 in a plane parallel to the flat portion 12 is not particularly limited, and for example, a circular shape, an elliptical shape, a rectangular shape, a polygonal shape, or the like can be arbitrarily selected. The cross-sectional shapes are preferably the same shape. In this example, the cross-sectional shape of the support hole 11 is a circle having substantially the same diameter. The diameter is set, for example, within a range of 1.3 to 2.2 mm.

  The reinforcing member 5 including the flat portion 12 and the flange portion 13 is formed in consideration of the productivity of small parts, the number of support holes 11 formed, the dimensions of the small parts, the strength of the holding jig 1, and the like. The dimension of the flat part 12 is adjusted. The reinforcing member 5 only needs to be formed of a material that can maintain the elastic member 6 in a flat shape, and examples of such a material include metals and resins. Specific examples of the metal include stainless steel, carbon steel, aluminum, aluminum alloy, and nickel alloy. Examples of the resin include polyester, polytetrafluoroethylene, polyimide, polyphenylene sulfide, polyamide, polycarbonate, polystyrene, and polypropylene. , Polyethylene and polyvinyl chloride. The reinforcing member 5 is preferably formed of workability, stainless steel, aluminum or an aluminum alloy, polyphenylene sulfide resin, or the like, and particularly preferably formed of aluminum or an aluminum alloy.

  As shown in FIGS. 1 and 2, the elastic member 6 has a plurality of holding holes 15, and has a gap that can accommodate the flat portion 12 therein. As shown in FIG. 2, the elastic member 6 embeds the flat portion 12 of the reinforcing member 5. In other words, the elastic member 6 covers both surfaces of the flat portion 12 and penetrates into the support holes 11 of the reinforcing member 5 to reinforce. It is formed so as to be flush with the flange 13 of the member 5. That is, the elastic member 6 is disposed on the surface of the flat portion 12 and is surrounded by the flange portion 13 of the reinforcing member 5. Here, the elastic member 6 has a flat portion 12 embedded so that the holding hole 15 passes through the inside of the support hole 11. Preferably, as shown in FIG. 2, the elastic member 6 embeds the flat portion 12 so that the holding hole 15 has an axis C common to the axis C of the support hole 11. When the elastic member 6 is formed in this manner, the adhesiveness between the elastic member 6 and the reinforcing member 5 is excellent, and insertion and extraction of small parts is facilitated.

  As shown in FIGS. 1 and 2, the elastic member 6 has a number of holding holes 15 penetrating in its thickness direction and elastically holding small parts inserted or penetrated therein by its elastic force. Have. The elastic member 6 basically has the same number of holding holes 15 as the support holes 11. The plurality of holding holes 15 are arranged in a so-called “staggered” manner along the first arrangement direction and the second arrangement direction basically in the same manner as the support holes 11. Specifically, the holding holes 15 include first holding holes 15A arranged in odd rows and second holding holes 15B arranged in even rows along the first arrangement direction. The first holding holes 15A are arranged in the outermost row in the first arrangement direction, and the second holding holes 15B are arranged in the outermost row in the second arrangement direction. The holding holes 15 are arranged at regular intervals in both the first arrangement direction and the second arrangement direction, basically at the same intervals as the support holes 11. The cross-sectional shape of the holding hole 15 in a plane parallel to the flat portion 12 is not particularly limited, and for example, a circular shape, an elliptical shape, a rectangular shape, a polygonal shape, or the like can be arbitrarily selected. The cross-sectional shapes are preferably the same shape. In this example, the cross-sectional shape of the holding hole 15 is a circle having substantially the same diameter. The diameter is adjusted so that the opening diameter is smaller than that of the support hole 11 in consideration of the size of a small component to be held. For example, the diameter of the holding hole 15 is set in a range of 80 to 90%, specifically in a range of 0.42 to 0.58 mm with respect to the diameter of the small component or the diameter of the virtual circumscribed circle. Is done.

  The elastic member 6 is adjusted in size and thickness so as to be flush with the flange 13 in consideration of the productivity of small parts, the size of the small parts, the elastic force exerted, and the like. The elastic member 6 is formed of a material that can be elastically deformed to insert and hold a small component. Examples of such a material include rubber and elastomer, and more specifically, silicone rubber. Among silicone rubbers, a silicone rubber obtained by crosslinking a linear polydimethylsiloxane having a high polymerization degree or a copolymer thereof to impart rubber elasticity, or an acid-resistant silicone rubber is preferable. As silicone rubber which bridge | crosslinked linear polydimethylsiloxane of high polymerization degree, a brand name "KE-1950-50" (made by Shin-Etsu Chemical Co., Ltd.) etc. can be obtained, for example.

  A holding jig 2 which is another embodiment of the holding jig according to the present invention will be described with reference to the drawings. As shown in FIG. 4, the holding jig 2 is basically the same as the holding jig 1 except that the arrangement of the holding holes 15, that is, the support holes 11 is different. As shown in FIG. 4, the holding holes 15 are arranged in a grid pattern along the first arrangement direction and the second arrangement direction.

  For example, the holding jigs 1 and 2 are inserted into the holding hole 15 so that the axis of the small part is substantially parallel to the axis of the holding hole 15, and preferably coincides with the axis of the holding hole 15. Hold it spontaneously. And the holding jigs 1 and 2 holding the small parts are used for the manufacturing process, the conveying process, etc. of the small parts. In order to hold the small parts on the holding jigs 1 and 2, for example, an alignment plate in which the same number of through holes as the holding holes 15 are similarly arranged at the same intervals as the holding holes 15 is prepared. Are aligned on the holding jig 1 so that. Next, a small component is inserted into each of the through holes of the alignment plate, and the small component is uniformly pressed to the holding jig side with a flat plate-shaped member. Then, the small component is inserted into the holding hole 15 so as to be in the above state, and is held elastically. As an example of such a method, for example, in Japanese Patent No. 4337498, various conventional methods (for example, see columns 0004 to 0009 and FIGS. 9 to 14) and methods obtained by improving these various methods (claims) Range, and FIG. 1 and FIG. 2 etc.).

  Since the holding jigs 1 and 2 are manufactured by the method for manufacturing the holding jig according to the present invention, the reinforcing member 5, particularly the flat part 12 thereof, is substantially deformed when removed from the molding die. The flatness of the reinforcing member 5, particularly the flat portion 12, is maintained. Since the holding jigs 1 and 2 are flat, a large number of small parts can be held in a uniform state. Therefore, according to the holding jig manufactured by the method for manufacturing a holding jig according to the present invention, a large number of small parts having high dimensional accuracy can be manufactured with high productivity.

  The manufacturing method of a holding jig according to the present invention is a manufacturing method in which a holding jig, for example, the holding jigs 1 and 2 are integrally formed with a molding die in which a plurality of molding pins forming a holding hole are erected. A method is characterized in that the molding pin is removed while maintaining the contact between the integrally molded body and the molding die in the direction of removing the molding pin. That is, the manufacturing method of the holding jig according to the present invention includes a molded body obtained by integrally molding a reinforcing member and an elastic material. It is characterized in that the molding pin is pulled out while maintaining the contact state with the inner surface of the mold cavity on the side in which the molding pin is pulled out. In other words, the manufacturing method of the holding jig according to the present invention includes removing the molding pin while maintaining the contact between the integrally molded body and the molding die in the direction of removing the molding pin. This is a method of releasing the integrally formed body of the reinforcing member and the elastic member formed in step 1 from the molding die. As described above, the manufacturing method of the holding jig according to the present invention includes the step of removing the molding pin while maintaining the contact between the integrally molded body and the molding die, that is, the state of restricting the deformation of the integrally molded body. Has a step of releasing (also referred to as a contact release step).

  In the manufacturing method of the holding jig according to the present invention, the molding pins can be sequentially withdrawn in n stages. However, since the contact state is maintained, all of the molding pins erected on the molding die are used. Even if it is pulled out at once, deformation of the reinforcing member can be prevented. Therefore, in the method for manufacturing the holding jig according to the present invention, it is preferable that the forming pins are pulled out in one step.

  As an example of a method for manufacturing the holding jig according to the present invention, a manufacturing method for manufacturing the holding jig 1 by removing all the forming pins at once (hereinafter referred to as one manufacturing method according to the present invention). Will be described with reference to the drawings. That is, in one manufacturing method according to the present invention, all molding pins are placed in the same removal direction while maintaining contact between the integrally molded body and the inner surface of the molding die in the removal direction of the molding pins. A contact mold release process is performed in which the mold is released by pulling out at once.

  In one manufacturing method according to the present invention, first, an elastic material for forming the molding die 30, the reinforcing member 5, and the elastic member 6 is prepared. FIG. 5 is a schematic explanatory view for explaining an example of a method for manufacturing a holding jig according to the present invention. FIG. 5 (a) shows a state in which the reinforcing member 5 is sandwiched between the molding dies 30 and is cut along its vertical surface. It is a schematic sectional drawing at the time.

  As shown in FIG. 5, the preparation mold 30 to be prepared includes a first mold 31 and a second mold 32, and a first mold 31 and a second mold that are arranged to face each other via the reinforcing member 5. A third mold 33 is provided between the molds 32, that is, disposed between them. The third mold 33 is an arrangement space in which the reinforcing member 5 is disposed between at least one of the first mold 31 and the second mold 32 and the second mold 32 in the molding mold 30. 34 is formed. Thus, the molding die 30 is arranged in the order of the second die 32, the third die 33, and the first die 31, and the arrangement between the second die 32 and the third die 33 is performed. A space 34 is formed. Since the third mold 33 is interposed between the first mold 31 and the second mold 32, the third mold 33 can also be called a core, and also regulates deformation of the integrally molded body as will be described later. It can also be called a regulation die. In the molding die 30, the inner surface 32a and the inner surface 33a of the second die 32 and the third die 33 facing each other so as to sandwich the reinforcing member 5 between the second die 32 and the third die 33 are It is flat. Therefore, in the molding die 30, the arrangement space 34 can also be referred to as a clamping space 34. In this example, the first mold 31 and the third mold 33 are movable so as to move forward and backward with respect to the second mold 32 and can be referred to as a movable mold, and the second mold 32 is illustrated. It is fixed to the substrate or the like of the molding machine that does not, and can be referred to as a fixed mold.

  In the molding die 30, the first die 31 and the third die 33 are arranged on the same side of the arrangement space 34 as shown in FIG. It can also be referred to as a split type that is divided into 33. The split mold includes a first mold 31 that is a first split mold having a molding pin 35 that stands vertically in the placement space 34, and a second mold that is disposed on the placement space 34 side with respect to the first mold 31. A third mold 33 that is a split mold is provided.

  As shown in FIG. 5, the first mold 31 is arranged on the same side as the third mold 33 with respect to the arrangement space 34, and a molding pin is formed on the surface facing the arrangement space 34, that is, on the inner surface 31a. 35. The molding pin 35 is formed so as to extend through a third mold 33 described later until it reaches the inner surface 32a of the second mold 32, and is vertically arranged in the arrangement space 34. . Further, the molding pin 35 penetrates the support hole 11 when the first mold 31 and the second mold 32 are arranged to face each other, in other words, when the reinforcing member 5 is arranged in the arrangement space 34. The same number is erected in the same arrangement as the arrangement of the support holes 11. In this molding die 30, since the elastic material is molded with the molding pin 35 penetrating into the support hole 11, the molding pin 35 forms the holding hole 15 in the elastic member 6. Therefore, the forming pin 33 is formed in a rod body having a cross-sectional shape substantially similar to that of the holding hole 15. As shown in FIG. 5, the first mold 31 is a flat plate mold disposed on a third mold 33 described later, and is formed into a rectangular plate body having substantially the same dimensions as the reinforcing member 5. It has become.

  As shown in FIG. 5, the third mold 33 is superimposed on the second mold 32 via the reinforcing member 5, and forms a placement space 34 together with the second mold 32. As shown in FIGS. 5 and 6, the third mold 33 has a through hole 33 b that penetrates in a thickness direction on a flat inner surface 33 a that is an upper surface of the arrangement space 34. As shown in FIGS. 5 and 6, the through-hole 33 b is the same as the molding pin 35 erected on the first mold 31 disposed on the opposite side of the arrangement space 34 with respect to the third mold 33. The same number of holes are formed in the same arrangement as that of the support holes 11. The through hole 33b has an inner diameter substantially the same as the outer diameter of the molding pin 35, and guides the forward and backward movement of the molding pin 35. In the third mold 33, the through hole 33b penetrates the molding pin 35 to the arrangement space 34, and the inner surface 33a where the through hole 33b is not perforated comes into contact with the surface of the integrally molded body to restrict its deformation. Therefore, since the integrally molded body is fixed in contact with the inner surface 33a, deformation when the molding pin 35 is removed can be prevented. As shown in FIG. 5, the third mold 33 is a flat plate mold disposed on the reinforcing member 5 and sandwiching the reinforcing member 5 together with the second mold 32, and is substantially the same as the reinforcing member 5. It is a rectangular plate-like body with the same dimensions. In addition, the molding pin is not erected on the third mold 33.

  As shown in FIG. 5, the second mold 32 is a flat plate-shaped mold on which the reinforcing member 5 is placed and sandwiched together with the third mold 33. In the second mold 32, the inner surface 32 a on which the reinforcing member 5 is placed has a rectangular shape having substantially the same dimensions as the reinforcing member 5.

  The first mold 31 and the third mold 33 are provided with a link member 36 that regulates the relative movement amount of each. Specifically, the link member 36 is erected at the corner of the third mold 33 and has a link main body 36a that penetrates the first mold 31 and a flange that bulges radially at the tip of the link main body 36a. And a locking recess 36c having a diameter larger than that of the link hole at the end of the link hole that penetrates the link main body 36a, that is, on the outer surface side of the first mold 31. . The link body 36a is a rod-shaped member whose axial length is adjusted so that the locking projection 36b is locked to the locking recess 36c when the forming pin 35 is sufficiently removed from the arrangement space 34. It is.

  The first mold 31 and the second mold 32 are basically the same as known molds for forming a holding jig, for example, except as described above.

  The second mold 32 is fixed to a known molding machine (not shown in FIG. 5) used for a transfer molding method, an injection molding method (injection molding method), and the like. The mold 31 is mounted so as to be movable.

  In one manufacturing method according to the present invention, the reinforcing member 5 is prepared. For example, a plate-like body having a flat portion in which the support holes 11 are not formed and a flange portion 13 around the plate portion is desired from the metal or resin plate that is the same as or thicker than the flange portion 13. Cut to dimensions. Or the flat part in which the support hole 11 is not formed, and the collar part 13 are produced separately, and the flat part and the collar part 13 are joined to a desired position by joining means such as welding or adhesion, and the plate A body is produced. If the reinforcing member does not have a flange, a plate-like body corresponding to the flat portion 12 is produced. A large number of support holes 11 having a predetermined shape and diameter are formed in the flat portion of the plate-like body thus manufactured along the first arrangement direction and the second arrangement direction by grinding, cutting, file finishing, or the like. Then, the reinforcing member 5 is manufactured by drilling so as to be aligned at a predetermined interval. Or the flat part 12 and the collar part 13 in which the support hole 11 was formed are produced separately, and the flat part or the flat part 12 and the collar part 13 are joined to a desired position by joining means such as welding or adhesion. Thus, the reinforcing member 5 is produced. Note that an adhesive or a primer may be applied to the surface of the flat portion 12 in order to increase the adhesion with the elastic member 6. In one manufacturing method according to the present invention, an elastic material for forming the elastic member 6 is prepared. Examples of the elastic material include a composition containing the rubber and elastomer.

  In one manufacturing method according to the present invention, as shown in FIG. 5A, the third mold 33 and the first mold 31 are arranged in this order above the first mold 31 fixed to the molding machine. Then, the disposing step of disposing the reinforcing member 5 in the disposing space 34 formed between the first mold 31 and the third mold 33 so that the forming pin 33 penetrates the support hole 11 is performed. . Specifically, the reinforcing member 5 is placed on the inner surface 32 a of the second mold 32, and the third mold 33 is placed thereon, and the second mold 32 and the third mold 33 are used. The reinforcing member 5 is sandwiched, and the first mold 31 is placed on the third mold 33 so that the molding pin 35 penetrates the through hole 33b and the support hole 11, and the arranging step is performed. In this way, the arrangement process is completed. When the arrangement step is completed, as shown in FIG. 5A, the molding pins 35 penetrate through all of the through holes 33b and the support holes 11, and the molding pins 35 and the second mold 32 are A cavity corresponding to the elastic member 6 is formed by the third mold 33 and the reinforcing member 5. The flat portion 12 of the reinforcing member 5 is hermetically sealed with a flange portion 13.

  Next, in one manufacturing method according to the present invention, as shown in FIG. 5A, the elastic material is heated after filling the cavity formed in the molding die 30 with the elastic material, A molding step of molding an integrally molded body of the reinforcing member 5 and the elastic member 6 is performed. Specifically, the cavity is filled with, injected or arranged with an elastic material, and the elastic material is heated and cured together with the molding die 30 by a heating means (not shown). The molding method of the elastic material is not particularly limited, and for example, a molding method such as a transfer molding method and an injection molding method (injection molding method) can be employed. The molding temperature, molding time, and the like may be any temperature and time at which the elastic material used is cured and molded, and can be arbitrarily adjusted according to the elastic material. When the molding process is completed in this way, the integral molded body is obtained.

  In the manufacturing method according to the present invention, a mold release step for releasing the integrally molded body from the molding die 30 is carried out after forming the integrally molded body in this way. As shown in FIG. 5B, this mold releasing step is performed in a state where the contact between the integrally molded body in the direction of removing the molding pin 35 and the molding die 30, that is, the third die 33 is maintained. And the second mold 32 in a state in which the contact state is released after the contact release step, as shown in FIG. 5C. This is a two-stage mold release process including a non-contact mold release process in which the upper integral molded body is released from the second mold 32.

  More specifically, in the contact releasing step, in the manufacturing method according to the present invention, the molding pin 35 is pulled out in a direction away from the second mold 32, so that the third mold 33 of the integrally molded body is removed. This is a process in which all the molding pins 35 are pulled out in one step in the same direction while maintaining a contact state between the surface on the side and the inner surface 33a on the integrally molded body side of the third mold 33. In this contact release process, as shown in FIG. 5A, after the molding process is completed, the inner surface 33a of the third mold 33 and the surface of the elastic member 6 in the integrally molded body are in contact with each other. While maintaining, that is, the third mold 33 does not move together with the first mold 31 and moves the first mold 31 away from the third mold 33 while restricting the displacement of the integrally molded body. . When the first mold 31 is thus moved to the opposite side of the second mold 32, the molding pin 35 is retracted from the arrangement space 34 and is removed from the elastic member 6. At this time, even if the first mold 31 moves in one direction as described above and a frictional force is generated between the molding pin 35 and the elastic member 6, the third mold 33 is in a stationary state and the third mold 33. Since the inner surface 33a of the elastic member 6 is in contact with the elastic member 6 and its displacement is restricted, the elastic member 6 and the reinforcing member 5 do not follow the removal of the molding pin 35, and the second arrangement space 34 is moved to the arrangement space 34. The initial state sandwiched between the first mold 32 and the third mold 33 is maintained. Therefore, the molding pin 35 can be removed from the integral molded body at once without causing the reinforcing member 5 to be deformed or damaged. When the first mold 31 moves in this way and reaches a predetermined amount of movement, the movement is stopped by the link member 36 as shown in FIG.

  According to this contact release process, for example, even a thick holding jig having a holding hole 15 having a relatively long axis length, used for processing both ends of a small component having a relatively long axis length. Moreover, even if it is a thin holding jig having a holding hole 15 with a short axis length, which is used for processing a small part having a relatively short axis length, the reinforcing member 5 is deformed or damaged. Without this, the molding pin 35 can be removed from the integral molded body. In addition, according to the contact release process, even if the reinforcing member 5 is easily deformed and damaged due to the increase in size and / or porosity of the holding jig in order to realize the recent demand for improvement in productivity, the deformation is also prevented. The molding pin 35 can be removed from the integrally molded body without causing damage. Therefore, according to the present invention, even a holding jig having a very large number of holding holes, for example, 6000 or more, particularly 10,000 or more, is reinforced by being released from the molding die without deforming the reinforcing member. A manufacturing method capable of manufacturing a holding jig that maintains the flatness of the member, and a reinforcing member in which a very large number of support holes, for example, 6000 or more, especially 10,000 or more, are formed by making the holding jig porous. However, it is possible to provide a molding die that can be easily released without deforming the reinforcing member.

  In one manufacturing method according to the present invention, the third mold 33 is released from the integrally molded body after the contact release step. The third mold 33 is in a state of being disposed on the integrally molded body. In particular, since the third mold 33 does not have a molding pin, the third mold 33 is arranged in a direction away from the second mold 32. When moved, the third mold 33 can be easily released from the integrally molded body without deforming the reinforcing member 5.

  In the manufacturing method according to the present invention, the non-contact release process is then performed. As shown in FIG. 5C, when the first mold 31 and the third mold 33 are released from the integrally molded body, the contact state between the integrally molded body and the third mold 33 is already released. The integrally molded body is placed on the second mold 32. In particular, since the second mold 32 does not have a molding pin, the integral molded body is moved away from the second mold 32. When moved, the integrally molded body can be easily released from the second mold 32 without deforming the reinforcing member 5.

  In the manufacturing method according to the present invention, since the elastic member 6 of the integrally formed body formed in this manner may have a molding burr near the opening of the holding hole 15 or the like, a molding burr is formed as necessary. Surface treatment such as grinding may be performed to remove the surface, and the surface of the formed elastic member 6 may be mirror-finished. Examples of such surface treatment include surface grinding, milling, lapping, mirror finishing, and the like.

  In this way, the holding jig 1 can be manufactured. The holding jig 2 can be manufactured in the same manner as in the manufacturing method according to the present invention.

  According to one manufacturing method according to the present invention, the molding pin 35 can be removed while the contact between the integrally molded body and the third mold 33 in the removal direction of the molding pin 35 is maintained. The integral molded body is not deformed following the removal of the forming pin 35 by the removal force of 33. On the other hand, according to the molding die 30, when the first die 31 is opened and the molding pin 35 erected on the first die 31 is removed, the integrally molded body is formed by the third die 33. It can be fixed in the arrangement space 34. Thus, according to the manufacturing method and the molding die 30 according to the present invention, the holding jig 1 which is released from the molding die 30 without deforming the reinforcing member 5 and maintains the flatness of the reinforcing member 5. And 2 can be manufactured. Therefore, according to the present invention, a manufacturing method capable of manufacturing a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member, and the reinforcing member is deformed. It is possible to provide a molding die that can be easily released without any problems.

  Another example of a molding die that can be used in one manufacturing method according to the present invention is a molding die 40 shown in FIG. As shown in FIG. 7, the molding die 40 is basically the same as the molding die 30 except that the second die 42 is different. The second mold 42 has a housing recess 42 b that houses the reinforcing member 5. That is, the 2nd metal mold | die 42 is provided with the surrounding wall which makes a circuit around a periphery, and internal space, ie, the accommodation recessed part 42b, is defined by the surrounding wall. The storage recess 42b is formed to have a shape and size capable of storing the reinforcing member 5. Accordingly, in the molding die 40, the arrangement space 44 is formed by the storage recess 42 b of the second mold 42 and the third mold 33, and the reinforcing member 5 is stored in this arrangement space 44. It can also be referred to as a space 44. In addition, as FIG. 7 shows, the inner surface 32a of the 2nd metal mold | die 42 is an inner surface of the accommodation recessed part 42b. When the manufacturing method according to the present invention is performed using the molding die 40, the reinforcing member 5 is arranged in the arrangement space 34 formed between the second die 32 and the third die 33, that is, The manufacturing method according to the present invention using the molding die 30 is the same as that of the present invention except that it is placed in the placement space 44 formed between the second die 42 and the third die 33 instead of being sandwiched. This is basically the same as the case of implementation. Therefore, even when the molding die 40 is used, the holding jigs 1 and 2 that maintain the flatness of the reinforcing member 5 by releasing from the molding die 40 without deforming the reinforcing member 5 are manufactured. Can do. Therefore, according to the present invention, a manufacturing method capable of manufacturing a holding jig that is released from a molding die and maintains the flatness of the reinforcing member without deforming the reinforcing member, and the reinforcing member is deformed. It is possible to provide a molding die that can be easily released without any problems.

  The molding die according to the present invention is not limited to the above-described embodiments, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, the molding dies 30 and 40 are arranged between the first die 31 and the second die 32 or 42, and the third die that is disposed between them and forms the arrangement space 34 together with the second die 32 or 42. However, in this invention, the molding die may further include a die arranged between the first die and the second die, like the third die. That is, the molding die includes a first die and a second die, and a third die and a fourth die arranged between them, and the arrangement space is arranged so as to face each other. The third mold and the fourth mold are formed. That is, the molding die is arranged on the second die in the order of the third die and the first die with the fourth die and the reinforcing member interposed therebetween. In this molding die, molding pins are erected on each of the first die and the second die, and these molding pins are arranged in the same manner as the support holes as a whole. At this time, the number of molding pins erected on each of the first mold and the second mold is equal to the number of molding pins erected on the first mold and the number of molding pins erected on the second mold. The ratio to the number is not particularly limited because the third mold and the fourth mold exist, and can be set in a range of, for example, 1: 9 to 9: 1. In this molding die, the same number of through-holes are drilled in the third die and the fourth die respectively in the same arrangement as the molding pins standing on the first die and the second die. Yes. According to this molding die, when the first mold is released and when the integral molded body is released from the second mold, the surface of the integral molded body in the removal direction of the molding pin is the third mold. And since it is controlled in the state which contacted the 4th metallic mold, it can demold without changing a reinforcing member.

  In the molding dies 30 and 40, as many molding pins 35 as the support holes 11 are erected in the first mold 31. In the present invention, a part of the molding pins are erected in the second mold. It may be. In this case, it is important to stand on the second mold a molding pin that does not deform the reinforcing member when the integral molded body is released from the second mold. The number of forming pins is determined in consideration of the material, standing position, and the like. For example, the number of molding pins that can stand on the second mold can be set to about 10 to 90% of the number of support holes 11.

  In the molding dies 30 and 40, the first mold 31 is a movable mold and the second mold 32 or 42 is a fixed mold. In the present invention, at least one of the first mold and the second mold is used. One side may be a movable type, and both the first mold and the second mold may be a movable type.

  In the molding dies 30 and 40, the molding pins 35 are arranged in a so-called “staggered” or grid pattern. In this invention, the molding pins support the holding holes of the holding jig to be manufactured, that is, the support of the reinforcing member. The arrangement is not particularly limited as long as the holes are arranged. For example, as the arrangement of the forming pins, for example, a so-called “staggered” arrangement in which the first holding holes 15A are the outermost rows in the first arrangement direction and the second holding holes 15B are the outermost rows in the second arrangement direction. A so-called “staggered” arrangement in which the angle is 15 to 75 ° (excluding 45 °), an inclined square arrangement obtained by rotating the grid-like arrangement by 45 degrees, and a honeycomb-like shape in which regular hexagons are arranged in a close-packed manner Examples thereof include an arrangement and a concentric arrangement.

  The manufacturing method of the holding jig according to the present invention is not limited to the above-described embodiments, and various modifications can be made within a range in which the object of the present invention can be achieved. For example, in the manufacturing method according to the present invention, all the molding pins 35 that are provided upright on the first mold 31 and are the same number as the support holes 11 are pulled out in one step. After the first mold in which the majority of the molding pins out of the number of holes are erected and moved to maintain the contact state, the majority of the molding pins are removed, and then the contact between the integrally molded body and the molding die Without maintaining the state, that is, while releasing or releasing the contact state, the second mold on which the remaining molding pins are erected out of the number of support holes is moved, and the remaining molding pins are removed. You can also

  In the manufacturing method according to the present invention, the molding pin 35 is pulled out in one step in the pulling direction. In this invention, the molding pin is classified into n (n is an integer of 2 or more) group. Then, each group may be sequentially extracted in n steps (n is an integer of 2 or more).

  In one manufacturing method according to the present invention, in order to ensure the hardening of the elastic member, if desired, before the mold is released from the molding die, or after being released from the molding die, the integral molded body May be subjected to secondary heating or heat treatment.

DESCRIPTION OF SYMBOLS 1, 2 Holding jig 5 Reinforcement member 6 Elastic member 11 Support hole 11A 1st support hole 11B 2nd support hole 12 Flat part 13 ridge part 15 Holding hole 15A 1st holding hole 15B 2nd holding hole 30, 40 Mold 31 First mold (first split mold)
31a, 32a, 33a Inner surfaces 32, 42 Second mold 33 Third mold (second divided mold)
33b Through-holes 34, 44 Arrangement space 35 Forming pin 36 Link member 36a Link body 36b Locking protrusion 36c Locking recess 42b Storage recess

Claims (4)

A reinforcing member formed with a support hole and an elastic member formed with a holding hole for holding a small part, and the reinforcing member is embedded in the elastic member so that the holding hole passes through the inside of the support hole. A manufacturing method for manufacturing a holding jig, which is integrally formed with a molding die in which a plurality of molding pins for forming the holding hole are erected,
A method of manufacturing a holding jig, wherein the molding pin is removed while maintaining contact between the integrally molded body and the molding die in the direction of removing the molding pin.   The method of manufacturing a holding jig according to claim 1, wherein the forming pins are pulled out in one step in the pulling direction. A reinforcing member formed with a support hole and an elastic member formed with a holding hole for holding a small part, and the reinforcing member is embedded in the elastic member so that the holding hole passes through the inside of the support hole. A molding die for molding a holding jig comprising:
The molding die is interposed between the first die and the second die, and the first die and the second die disposed between the first die and the second die. A third mold for forming an arrangement space for arranging the reinforcing member between at least one of the molds;
Of the first mold and the second mold, the mold disposed on the same side as the third mold with respect to the arrangement space passes through the third mold and extends vertically to the arrangement space. With standing molding pins,
3. The molding die according to claim 1, wherein the third die has a through-hole drilled in the same arrangement as the molding pin of the die.   The molding die according to claim 3, wherein the molding pins are erected on the first die in an arrangement similar to the arrangement of the support holes.

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